Question

What precautions should be taken while measuring rainfall?

Answer 1

• Rainfall is an important source of water on planet earth and rainfall is formed because of changes in the temperature of the air with water vapour.
• The instrument that is used to measure rainfall is called rain gauge.
• The funnel i.e. used for measuring rain has a specific diameter and the rain falling in this funnel is collected in bottle fitted in the gauge.
• The collected water is then measured with the help of measuring jar. In the areas of heavy rainfall, the reading of the rain with rain gauge should be taken every three hours. The measuring jar reads rain in millimetres
• The gauge has to be kept on open ground on 30cm high flat-mount.
• So that the rain water is collected without any obstruction.